Association of baseline core volume and early midline shift in acute stroke patients with a large ischaemic core.

Background: Midline shift (MLS) is troublesome problem that may occur in patients with a large infarct core (LIC) and may be related to the baseline infarct core volume. The purpose of this study was to explore the relationship between baseline infarct core volume and early MLS presence.

Materials And Methods: Patients with acute intracranial large artery occlusion and a pretreatment relative cerebral blood flow (rCBF) <30% volume ≥50 ml on CT perfusion (CTP) were included, clinical outcomes following endovascular treatment (EVT) were retrospectively analyzed.

Stent-unsheathed effect predicts acute distal middle cerebral artery atherosclerotic disease-related occlusion.

Background: The differentiation of intracranial atherosclerosis (ICAS) and embolism is important.

Objective: In cases of ICAS, we observe a phenomenon that we call the "post-stent-deployment effect"; that is, all major branches are clearly visible beyond the occlusion segment when the stent is deployed at the site of occlusion. Our objective is to evaluates whether this post-stent-deployment effect can be used to differentiate ICAS from embolism in the distal M1 segment occlusion.

Clinical significance of common-stem lenticulostriate arteries in patients with internal watershed infarction.

Background: A common-stem origin of lenticulostriate arteries (CS-LSAs) is an anatomical variation that supplies a moderate to large section of the basal ganglia. We hypothesized that CS-LSAs with a patent orifice are located at distal positions of the acute-occluded middle cerebral artery (MCA) and that the blood flow of CS-LSAs is supplied by pail arterial anastomoses and results in hypoperfusion of CS-LSAs, similar to a deep watershed (DWS) infarction.

Objective: Our study evaluated the possibility of CS-LSAs in patients with DWS infarction and MCA occlusion and also assessed the safety of endovascular therapy (ET) in these patients.

Safety of Endovascular Therapy in Progressive Ischemic Stroke and Anterior Circulation Large Artery Occlusion.

Background And Objective: The prognosis of progressive ischemic stroke (PIS) caused by large proximal artery occlusion with hemodynamic was poor. Our study aimed to investigate the safety of endovascular therapy (ET) for patients with PIS who were selected based on ischemic penumbra detected on brain imaging.

Methods: A cohort of consecutive patients with PIS, who were treated with ET, were identified.

Endovascular Therapy Strategy for Acute Embolic Tandem Occlusion: The Pass-Thrombectomy-Protective Thrombectomy (Double PT) Technique.

Objective: Embolic occlusions of the common carotid artery (CCA)/internal carotid artery (ICA) and intracranial artery occlusions in acute ischemic stroke are associated with high morbidity and can benefit from endovascular therapy. However, the optimal endovascular strategy for these conditions is unclear. This study aimed to evaluate the feasibility of the pass-thrombectomy-protective thrombectomy (double PT) technique and the clinical outcome of treated patients.

Microcatheter "First-Pass Effect" Predicts Acute Intracranial Artery Atherosclerotic Disease-Related Occlusion.

Background: The differentiation between intracranial atherosclerotic stenosis (ICAS) and intracranial embolism as the immediate cause of acute ischemic stroke requiring endovascular therapy is important but challenging. In cases of ICAS, we often observe a phenomenon we call the microcatheter "first-pass effect," which is temporary blood flow through the occluded intracranial artery when the angiographic microcatheter is initially advanced through the site of total occlusion and immediately retrieved proximally.

Objective: To evaluate whether this microcatheter first-pass effect can be used to differentiate ICAS from intracranial embolism.

Another Endovascular Therapy Strategy for Acute Tandem Occlusion: Protect-Expand-Aspiration-Revascularization-Stent (PEARS) Technique.

Objective: Initial stenotic occlusion of the internal carotid artery with intracranial artery occlusion in acute ischemic stroke is associated with high morbidity and can benefit from endovascular therapy. However, the optimal endovascular strategy is unclear. This study aimed to evaluate the feasibility of the "half" anterograde approach and clinical outcome of treated patients.

Adjuvant intra-arterial rt-PA injection at the initially deployed solitaire stent enhances the efficacy of mechanical thrombectomy in acute ischemic stroke.

Background: Both intra-arterial recombinant tissue plasminogen activator (rt-PA) and stent retrieval are effective for treating acute ischemic stroke. The goal of this study was to evaluate the effectiveness of stent retrieval combined with intra-arterial rt-PA administration via micro-catheter (called the complex technique) in acute ischemic stroke.

Material And Methods: A retrospective analysis was performed of 93 consecutive patients treated between 2015 and 2017 for occlusions of the intracranial large artery using the complex technique (n=37) or stent retrieval alone (n=56) in our stroke center.

Special Endovascular Treatment for Acute Large Artery Occlusion Resulting From Atherosclerotic Disease.

Background: Acute intracranial atherosclerotic disease (IAD)-related large artery occlusion (LAO) is typically refractory to mechanical thrombectomy. We evaluated the feasibility and safety of emergency balloon-assisted or stent-assisted angioplasty performed with tirofiban administration for acute IAD-related LAO.

Methods: We identified, from among 55 consecutive patients who underwent endovascular treatment for LAO, 12 patients with acute IAD-related LAO who underwent balloon-assisted or stent-assisted angioplasty with (n = 3) or without passage of a stent retriever.

Diagnostic ability of 3-dimensional contrast-enhanced MR angiography in identifying vertebral basilar artery stenosis.

Background: Vertebral-basilar artery stenosis is associated with posterior circulation infarction. So correct detection of vertebral basilar artery stenosis is very important. Studies concerning the sensitivity and specificity of 3-dimensional contrast enhanced MR angiography (3D-CE-MRA) in detecting vertebral basilar artery stenosis is generally lacking.